Non-Blazhko RR Lyrae Stars Observed with the KEPLER Space Telescope
Abstract
This paper summarizes the main results of our recent study of the non-Blazhko RR Lyrae stars observed with the Kepler space telescope. These stars offer the opportunity for studying the stability of the pulsations of RR Lyrae stars and for providing a reference against which the Blazhko RR Lyrae stars can be compared. Of particular interest is the stability of the low-dispersion (sigma < 1mmag) light curves constructed from ~18,000 long-cadence (30-min) and (for FN Lyr and AW Dra) the ~150,000 short-cadence (1-min) photometric data points. Fourier-based [Fe/H] values and other physical characteristics are also derived. When the observed periods are compared with periods computed with the Warsaw non-linear convective pulsation code better agreement is achieved assuming pulsational L and M values rather than the (higher) evolutionary L and M values.
Keywords
Cite
@article{arxiv.1108.5683,
title = {Non-Blazhko RR Lyrae Stars Observed with the KEPLER Space Telescope},
author = {J. M. Nemec and R. Smolec and J. M. Benko and P. Moskalik and K. Kolenberg and R. Szabo and D. W. Kurtz and S. Bryson and E. Guggenberger and M. Chadid and Y. -B. Jeon and A. Kunder and A. C. Layden and K. Kinemuchi and L. L. Kiss and E. Poretti and J. Christensen-Dalsgaard and H. Kjeldsen and D. Caldwell and V. Ripepi and A. Derekas and J. Nuspl and F. Mullally and S. E. Thompson and W. J. Borucki},
journal= {arXiv preprint arXiv:1108.5683},
year = {2011}
}
Comments
To appear in the Carnegie Observatories Astrophysics Series, volume 5